StrelokPro & angles

For those who use it, do you use the angle from Strelok or do you use the straight line calculation done in your rangefinder, if yours has it. The rangefinder I ordered does not have it. My initial opinion is that it just takes a single step after you enter the yardage to point the phone at the target and let it calculate the angle for you. Just wanted to know the saltys with Strelok how they do it.